DAY 316:

The Main Challenge

One from our range of Mathelona number puzzles now available in pocket book format.  Your task is to make all three lines work out arithmetically by filling the 12 gaps with the following numbers:

0     0     1     1     2     2     2     2     4     5     6     7

Can you successfully complete this?

◯  +  ◯   =    6    =   ◯  –  ◯
◯  +  ◯   =    2    =   ◯  ×  ◯
◯  +  ◯   =    7    =   ◯  ÷  ◯

Full details of our pocket book can be found by clicking Mathelona.

The 7puzzle Challenge

The playing board of the 7puzzle game is a 7-by-7 grid containing 49 different numbers, ranging from 2 up to 84.

The 1st & 2nd columns contain the following fourteen numbers:

2   10   13   16   21   22   27   33   45   48   55   56   60   70

What is the sum of the multiples of 11 listed above?

The Factors Challenge

Which is the ONLY number below that is a factor of 316?

3      4      5      6      7      8      9

The Mathematically Possible Challenge

Using 47 and 11 once each, with + – × ÷ available, which is the ONLY number it is possible to make from the list below?

2    3    5    7    11    13    17    19    23    29

#PrimeNumbers

The Target Challenge

Can you arrive at 316 by inserting 2, 4, 5, 6 and 7 into the gaps below?

  •  ◯²×◯²–◯×◯×◯ = 316

Answers can be found here.

Click Paul Godding for details of online maths tuition.

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